No, Scots is actually a dialect of English, or it's own West Germanic language. Scottish Gaelic is however a Celtic language. There are three languages in Scotland, Scots, English, and Scottish Gaelic; there are also various dialects of those.

brantgoose:Gaelic is the name for a number of dialects and possibly languages such as Scotch Gaelic, Irish Gaelic, Welsh, and Cornish Gaelic. The language is named after the Gaels (of Gaul and the pays de Gaule) and was spoken across much of Europe when the Romans were still in swaddling clothes. The Celts or Kelts (it is correctly pronounced with a hard or a soft "c" and don't let anybody tell you otherwise) were a culture that once spread across most of Europe. We get Celtic from the French (Celtiques) and Keltic from the Romans (kelticus). That is the main difference except that if an Englishman chooses to use one or other other, it is the wrong one.

Modern Irish is a reconstructed language like modern Hebrew as spoken in Israel. Both were nationalistic creations and are somewhat arbitrary. Especially the Irish spelling. They throw in every consonant they can think of and then don't pronounce any of them.

I watched a movie in Scots Gaelic once. What a soft, lilting and beautiful language it was. Absolutely nothing whatsoever like Scottish English. Imagine the difference between a raging Scotsman and Mrs. Doubtfire and then multiply that by ten.

As observed by Jean-Jacques Rousseau, people who live out in the open air speak softly and distinctly, while us urbanites are often harsh and ugly speakers who mangle the Mother tongue, whatever it may be.

The Gaelic I heard was the sweet whispering of the sea breeze across prairies full of wild flowers and sweet-scented hay. It was scented with lavender or possibly the vanishing whiff of lilac.

I imagine that a low caste Dubliner sounds like a pig squeeling in terror in an abattoir by comparison.

So don't bad mouth the Gaelic or the Gaelic Mouth will chew you up and spit out your bones to spell the Gaelic word for something you should have done last Thursday but won't get around to doing until after the next Christmas but one.